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  <title>Bug 957439 - Media Recording - Assertion fail at Pause if unsupported input stream.</title>
  <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
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<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=957439">Mozilla Bug 957439</a>
<pre id="test">
<script class="testbody" type="text/javascript">


function startTest() {
  // also do general checks on mimetype support for audio-only
  ok(MediaRecorder.isTypeSupported("audio/ogg"), 'Should support audio/ogg');
  ok(MediaRecorder.isTypeSupported('audio/ogg; codecs="opus"'), 'Should support audio/ogg+opus');
  ok(!MediaRecorder.isTypeSupported('audio/ogg; codecs="foobar"'), 'Should not support audio/ogg + unknown_codec');
  ok(!MediaRecorder.isTypeSupported("video/webm"), 'Should not support video/webm');
  ok(!MediaRecorder.isTypeSupported("video/mp4"), 'Should not support video/mp4');

  navigator.mozGetUserMedia({audio: false, video: true, fake: true},
    function(stream) {

      // Expected callback sequence should be:
      // 1. onerror (from start)
      // 2. onerror (from pause)
      // 3. ondataavailable
      // 4. onstop
      var callbackStep = 0;
      var mediaRecorder = new MediaRecorder(stream);

      is(mediaRecorder.stream, stream, 'Stream should be provided on creation');

      mediaRecorder.onerror = function (e) {
        callbackStep++;
        if (callbackStep == 1) {
          try {
            mediaRecorder.pause();
          } catch(e) {
            ok(false, 'Should not get exception in pause call.');
          }
        }
        ok(callbackStep < 3, 'onerror callback fired as expected.');
        is(e.name, 'GenericError', 'Error name should be GenericError.');
        is(mediaRecorder.mimeType, '', 'mimetype should be empty');
        is(mediaRecorder.state, 'recording', 'state is recording');
        info('onerror callback fired');
      }

      mediaRecorder.onwarning = function () {
        ok(false, 'Unexpected onwarning callback fired.');
      };

      mediaRecorder.ondataavailable = function (evt) {
        callbackStep++;
        info('ondataavailable callback fired');
        is(callbackStep, 3, 'should fired ondataavailable callback');
        is(evt.data.size, 0, 'data size should be zero');
        ok(evt instanceof BlobEvent,
           'Events fired from ondataavailable should be BlobEvent');
        is(evt.data.type, '', 'encoder start fail, blob miemType should be empty');
      };

      mediaRecorder.onstop = function() {
        callbackStep++;
        info('onstop callback fired');
        is(mediaRecorder.state, 'inactive', 'state should be inactive');
        is(callbackStep, 4, 'should fired onstop callback');
        SimpleTest.finish();
      };

      try {
        mediaRecorder.start();
      } catch(e) {
        ok(false, 'Should not get exception in start call.');
      }
    },
    function(err) {
      ok(false, 'Unexpected error fired with: ' + err);
      SimpleTest.finish();
    }
  );
}

SimpleTest.waitForExplicitFinish();

// In order to generate an "unsupported stream", pref off video encoding to
// make the platform support audio encoding only.
SpecialPowers.pushPrefEnv(
  {
    "set": [
      ["media.encoder.webm.enabled", false],
    ]
  }, startTest);

</script>
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